<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/vue.js"></script>
</head>
<body>
<div id="div">
    <p>{{score}}</p>
    <div v-if="score>=90 && score<=100">优秀</div>
    <div v-else-if="score>=80">良好</div>
    <div v-else-if="score>=70">中等</div>
    <div v-else-if="score>=60">及格</div>
    <div v-else>不及格</div>
</div>
<script>
    var vm = new Vue({
        el : "#div",
        data:{
            score:75
        }
    })
</script>
</body>
</html>